Tractor-engine



G. H. SCANLAN.

TRACTOR ENGINE. APPLYICATYIONFILED SEPT. 2o, 1919.

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G. H. SCANLAN.

TRACTOR ENGINE.

APPLICATION FILED SEPT. 20, 1919.

1,370,844. Patented Mar. 8, 1921.

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Tucson-mom Specification of Letter: I'atent.

Application filed September 20, 1818. Serial ll'o. 885,186.

To all whom it may concern:

Be it known that I, Gnoaen H. ScANmN,

residing at New York, in the county and State of- New York, haveinvented certain new and useful Improvements in Tractor- Engines, ofwhich the following is a specification.

This invention relates to an engine, and particularly to an engine ofthe explosive type, such as may be used'for tractors and the like.

An object of the invention is to provide an engine having its severalparts so simplified and correlated that the number of parts may bemaintained at a minimum and without sacrifice of efiicienc the presentinvention being ada table or use in a tractor.

such as that s own and described in my Patent 1,324,694, Dec. .9, 1919.v

A further ob'ect is to provide an engine of the kind indicated andincluding a valve operating shaft having direct spiral gear connectionfor driving an electric generator or magneto device which may beconnected for supplying electric energy for the spark plug or plugs ofthe engine, also for oper ating the en ine fan.

etailed ob'ect is to provide a A more mechanism of the type indicatedand including one or more tractor wheels, together with connections fordriving said wheels, and to provide a valve operating shaft arranged tobe operated by said connections and having direct gear engagement with adrive shaft for a generator 'or magneto device, so that said generatoror magneto device, as well as the fan, is adapted to be c erated throughthe least possible number 0 arts.

further and more detailed object is to provide an engine including theusual piston and crank shaft, a gear fixed to rotate with the crankshaft, a second ear engagereby, one or more traction wheels arranged tobe driven by saidsecond gear, valve operating means a ma eto deviceconnected to be driven by sai valve operatin means.

. above, will be in part obvious and in part pointed out inthe course ofthe following description of-the elements, comblnations, arrangements ofparts and applications of so arranged to be driven by this second gear,and an electric generator or.

'Patented Mar.8,121.'

principles, constituting the invention, and

the scope of protection contemplated will be indicated in the appendedclaims. In the accompanying drawings which are to be taken as a part ofthis specification, and inwhich I have shown merely a pretferred form ofembodiment of the inveni0n:--

Figure 1 is a vertical sectional view of an engine constructed inaccordance with this invention, parts-being shown in full lines.

ig. 2 is avertical sectional view taken at right aniles'to the viewbeing ta en substantially on the plane of line III of Fig. 1, I

Fig. 3 is horizontal sectional view taken substantially u on theirregular plane indicated by the 'ne III-III of Fig. 1, and

Fig. 4 1s a fragmentary detail v1ew illustrating the manner ofsupporting the fan shaft.

Referrin Fig. 1, the section to the drawings for describin the referencecharacter L indicates the engine cylinder. While of course there may beany number of cylinders only one such is illustrated.

The'crank shaft, as 1, is mounted within bearings 2 rovided at o positesides of a casing 3, w ich casing epends below'the engine cylinder. Thecrank shaft is connected with the engine piston in the usual manner, asat 4, so that the reciprocations oi the piston will produce rotationoftthe s a Fixed to the shaft, and-preferably within the casing, 3, isarran the teeth of which mes large withthe' teeth of a gear 6 carriedupon a shaft 7 disposed parallel to the crank shaft 1 and supported inbearings 8 on opposite sides'of the eased a small pinion 5 ing. Theendportions of the shaft 7 pro- A he valve rode, as 11, for the engineare ficiency and simplicity are at once obtained.

with respect to the parts to which these gears are related.

The generator, or magneto device, as H, is adapted to be operated by ashaft 16 which extends in 'a direction at right an gles to the shaftsheretofore mentioned, and

it is an essential feature of this invention to provide the siin le anddirect means as illustrated for drivin means includes disposing theshaft 16 so that a portion of its length traverses directly be neath aportion of the valve operating shaft 13, and in providing these said twoshafts with intermeshing helical gears 17 and 18. The spiral gears may,of course, be of any relative proportions to each other according to thespeed of rotation which it is desired shall be im arted to the shaft 16from the shaft 13. r the pitch of the gears may be modified to the samepurpose It will thus be seen that the only elements of mechanism whichare provided for op; erating the generator shaft are the two gears 17and 18. No other gears, shafts or other contrivances are present orrequired. Yet the arrangement is one of extreme simplic ity and entirepracticability. I

As is clearly illustrated in the drawings Figs. 1 and 4, the generatorshaft is also adapted for driving the engine fan. For this purpose thegenerator shaft is fitted with a drive pulley 19 about which the fanbelt 20 through which power is transmitted from the generator shaft tothe pulley 21 .on the fan shaft 22. The ptulley 21 .is fixed at one endof the fan sha and the fan 23 is fixed atthe opposite end, the shaftbein supported intermediate its len h withm a bearing 24.

nthis way the simple driving connec tions, as described, for the eratorshaft, arealso adapted for driving the fan, the connections serving withficiency and practicability for be purposes. V

It is a further feature of this invention to utilize the portion of thecasing, as 25, which surrounds the gear 6 as a support. for a breatherpipe 26 and to dispom' this breather pipe in such relation to the fanshaft that the bearing iece 24 carrying the fan shaft may be read ymounted upon the breather pipe in a manner so that adjustthis shaft 16.This ual efthese 4 and 2.

ment of the fan shaft with respect to the shaft 16 may be readily andeasily accomplished. In carrying out this object it will be seen thatthe bearing piece 24 is formed at one end of an arm 27, the opposite endof which is shaped to constitute a clamp element 28 fitted about thebreather pipe 26.

, By simple manipulation of the clamp screw conveniently reaclung thedifferent parts as occasion may require. For instance, it will be notedthat by employinga direct spiral gear connection between the valve shaftand the shaft 16, and by thereby avoiding the use of additional shaftsand gears which would necessarily occupy much of the space now given tothe breather pipe and fan parts, said space is left entirely free of anyobstruction so that the breat er pi and fan parts are admirably'positione both for simplicity and efficiencyof operation and forconvenience of manipulation whenever occasion should requirereadjustment of these parts.

The breather pipe may also be conveniently utilized as a su port for.the fuel tank 30. As illustrated, the tank 30 is fixed to the upper endof the breather pipe by means of a clamp device 31.

As many changes could be made in this construction without departingfrom the scope of the invention as defined in the fol-- I lowing claims,it is intendedthat all mat- 105 ter contained in the above descriptionor shown in the accompanying drawings, shall be interpreted asillustrative only and not in a sense. I

Havin thus described. my invention, what I c aim as new and desire tosecure by Letters Patent is 1. In a tractor engine, comprising acylinder having the usual valve and valve'opcrating shaft, a radiatorfan, an electric nerator device, a shaft for-driving said an andgenerator device, and driving connections whereb said valve shaft ismade to drive said secon shaft and to drive through said second shaftsaid fan and said nerator device, the combination therewit of a air oftractorwheels, and drive means for said valve shaft and wheelscomprising a drive shaft extending between sald wheels geared theretoand to'said valve shaft.

der having the usua valve and valve operatmg shaft, a radiator fan, anelectric n a tractor en e, comprising a cylin nerator device, a shaftfor driving said an and generator device, and drivin connectionsinter-engaging between an en portion of said valve shaft and said secondshaft at one side of said cylinder whereby said valve shaft is made todrive said second shaft and to drive through said second shaft said fanand said generator device, the combination therewith of a pair oftractor wheels, and drive means for said valve shaft and wheelscomprising a shaft extending between said wheels being geared at itsends with said wheels, connections between the engine and said wheeldriving shaft comprising in part a gear carried by said wheel drivingshaft.

and a further gear meshing with said last mentioned gear and being fixedto the valve operating shaft at the opposite side of the cylinder.

3. In a tractor engine, the combination comprising a cylinder having theusual crank shaft and valve operating shaft extendin parallel with saidcrank shaft, of a pair 0 traction wheels, bearings for said crank shafthavin parts serving as axles for said traction wfieels, a shaft spacedfrom said crank shaft parallel therewith being geared by its oppositeends with said traction wheels to drive said tractionwheels, a

inion gear carried by the crank shaft a arge gear carried by said wheeldriving shaft meshing with said pinion gear, a gear fixed to said valveoperating shaft and meshing with said large gear, said three mentionedgears being disposed in a plane at one side of thecylmder, an electricgenerator device, a shaft arranged at the 0 posite side of the cylinderextendin at rig t angles to all said mentioned sha ts, beln connectedwith said generator device, an helical gear connections between saidlast mentioned shaft and said valve shaft.

4. In a tractor en ine, comprising a cylinder having the usua? valve andvalve operating shaft, a radiator fan, an electric generator device, ashaft for driving said fan and generator device, and driving connectionswhereby said valve shaft is made to drive said second shaft and to drivethrough said second shaft said fan and said generator device, thecombination therewith of a tractor wheel, and drive means for said valveshaft and wheel comprising a drive shaft geared to said wheel and tosaid valve shaft.

Iii-testimony whereof I affix my signature in the presence of twowitnesses.

. GEORGE H. SCANLAN.

Witnesses N. SLA'ITERY, E. Boss.

